Tracing Instructions; Execution Instructions - Freescale Semiconductor Motorola MMDS0508 Operation Manual

NOTE:
Tracing
Instructions
NOTE:
Execution
Instructions
MMDS0508OM/D
MOTOROLA
Freescale Semiconductor, Inc.
A properly defined breakpoint permits analysis of the contents of
registers and memory locations and the states of various signals at
designated addresses in the program.
The idle status also occurs if the system attempts to execute code at an
address not defined as a valid memory address.
The step (ST, STEP, and T are identical) commands will execute a
specified number of instructions beginning at the current PC value. The
STEPFOR command begins instruction execution at the current PC
value, continuing until a key is pressed or until execution arrives at a
breakpoint. The STEPTIL command executes instructions from the
current PC value to a specified address.
Do not use any step command (ST, STEP, STEPFOR, STEPTIL, or T)
if the PC points to internal RAM (such as option RAM) or EEPROM or if
the code branches into internal RAM or EEPROM.
The step commands are not real-time. They execute one instruction at a
time, then return control to the monitor. Do not rely on timer values.
The go (G or GO) command starts emulation at the address in the PC or
at an address entered with the command. Execution continues until it
encounters a breakpoint, until the bus analyzer (optionally) stops it, or
until the STOP command is entered. If a second address is entered with
the G or GO command, execution stops at the second address. The
GOTIL command starts emulation at the location in the PC and stops at
the address entered with the command. The STOP command stops the
emulator.
The RESETGO command resets the MCU, fetches the reset vector
address, and begins code execution at that address.
Operation Fundamentals
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Operation Fundamentals
Debug Commands
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